Comparison Error Mchc / Chcm (Chcmce, Cc) - Siemens ADVIA 2120 Operator's Manual

Results Flagged
WBC, WBCB, %BASO, #BASO, %LYMPH, #LYMPH
A four-part WBC differential (basophils excluded) is reported with the measured
BASO values displayed and flagged, and with the LYMPH and LUC values also
flagged.
Corrective Action
1. Check the baso reaction chamber temperature.
2. Check the reaction chamber temperature controller, including the electrical
connection.

Comparison Error MCHC / CHCM (CHCMCE, CC)

Definition
The Comparison Error MCHC/CHCM flag is triggered if the difference between
the MCHC and CHCM values is greater than 1.9.
Results Flagged
MCHC, CHCM, RBC, MCV, HGB, HCT, MCH, RDW, HDW, CH, CHDW
Corrective Action
Multiple occurrences of this flag, especially for consecutive samples, can indicate
a system problem. However, isolated instances of this flag are usually sample
related.
The following list of sample-related causes may not contain all conditions that
could cause this flag. There is no intention to associate the flag with specific
diagnoses.
System Related
1. If another flag appears along with the
comparison error, troubleshoot that error first.
2. To determine the faulty channel, run the same
normal whole blood sample five times to
check precision of the RBC, MCV, and HGB
values. Then, run a normal-level control to
check accuracy.
a. If all results are acceptable, calibrate
b. If the HGB results are faulty, troubleshoot
c. If RBC or MCV results are faulty,
Flags
RBC, MCV, CHCM, and HGB
parameters.
the hemoglobin channel.
troubleshoot the RBC channel.
Sample Related
•
Lipemia
•
Leukemia
(high WBC)
•
Neonatal (NRBCs)
•
Hemolytic anemias
•
Cold agglutinins
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